The MUSE (metaplasia, ulcer, stricture, erosion) classification scheme can be used to describe the endoscopic appearance of reflux disease in the esophagus. This can be used to monitor the patient over time.
Parameters:
(1) intestinal metaplasia
(2) ulcer
(3) stricture
(4) erosions
|
Parameter |
Finding |
Grade |
|
metaplasia |
absent |
M0 |
|
|
one fold |
M1 |
|
|
>= 2 folds |
M2 |
|
|
circumferential |
M3 |
|
ulceration |
absent |
U0 |
|
|
junctional (Wolf or Savary ulcer) |
U1 |
|
|
Barrett's ulcer |
U2 |
|
|
mixed (Wolf and Barrett's) |
U3 |
|
stricture |
absent |
S0 |
|
|
luminal opening >= 9 mm |
S1 |
|
|
luminal opening < 9 mm |
S2 |
|
|
stricture plus short esophagus |
S3 |
|
erosions |
absent |
E0 |
|
|
one fold |
E1 |
|
|
>= 2 folds |
E2 |
|
|
circumferential |
E3 |
The findings are then recorded as the MUSE grades.
The presence or absence of hiatus hernia is also recorded.
Specialty: Gastroenterology
